Find the Probability of One Event and a Second Event $\frac { 1 } { 400 }$

question 76

Multiple Choice

Find the Probability of One Event and a Second Event Occurring
-An urn contains balls numbered 1 through 20. A ball is chosen, returned to the urn, and a second ball is chosen. What is the probability that the first and second balls will be a 7?

• A) \(\frac { 1 } { 400 }\)
• B) \(\frac { 1 } { 10 }\)
• C) \(\frac { 7 } { 20 }\)
• D) \(\frac { 7 } { 40 }\)